222201121212001 has 8 divisors (see below), whose sum is σ = 222564033736200. Its totient is φ = 221838426593280.

The previous prime is 222201121211977. The next prime is 222201121212013. The reversal of 222201121212001 is 100212121102222.

It can be written as a sum of positive squares in 4 ways, for example, as 20221569985600 + 201979551226401 = 4496840^2 + 14211951^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222201121212001 - 2⁵ = 222201121211969 is a prime.

It is a super-3 number, since 3×222201121212001³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222201121212001.

It is not an unprimeable number, because it can be changed into a prime (222201121212061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52435216 + ... + 56514193.

It is an arithmetic number, because the mean of its divisors is an integer number (27820504217025).

Almost surely, 2^{222201121212001} is an apocalyptic number.

It is an amenable number.

222201121212001 is a deficient number, since it is larger than the sum of its proper divisors (362912524199).

222201121212001 is a wasteful number, since it uses less digits than its factorization.

222201121212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108952739.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222201121212001 its reverse (100212121102222), we get a palindrome (322413242314223).

The spelling of 222201121212001 in words is "two hundred twenty-two trillion, two hundred one billion, one hundred twenty-one million, two hundred twelve thousand, one".